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v3.26.1

Debt and Financing Activities - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions | Jun. 30, 2026 | Mar. 31, 2026
--- | --- | ---
Debt Instrument [Line Items] |  |
Total debt | $ 9,729 | $ 6,526
Less: Current portion | 1,297 | 1,267
Total long-term debt | $ 8,432 | 5,259
Loans payable | 1.30% Notes due August 15, 2026 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 1.30% |
Total debt | $ 500 | 500
Loans payable | 7.65% Debentures due March 1, 2027 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 7.65% |
Total debt | $ 150 | 150
Loans payable | 3.95% Notes due February 16, 2028 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 3.95% |
Total debt | $ 343 | 343
Loans payable | 4.90% Notes due July 15, 2028 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 4.90% |
Total debt | $ 400 | 400
Loans payable | 4.75% Notes due May 30, 2029 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 4.75% |
Total debt | $ 196 | 196
Loans payable | 4.25% Notes due September 15, 2029 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 4.25% |
Total debt | $ 500 | 500
Loans payable | 4.65% Notes due May 30, 2030 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 4.65% |
Total debt | $ 650 | 650
Loans payable | 4.95% Notes due May 30, 2032 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 4.95% |
Total debt | $ 650 | 650
Loans payable | 5.10% Notes due July 15, 2033 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 5.10% |
Total debt | $ 597 | 597
Loans payable | 5.25% Notes due May 30, 2035 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 5.25% |
Total debt | $ 699 | 699
Loans payable | 6.00% Notes due March 1, 2041 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 6.00% |
Total debt | $ 218 | 218
Loans payable | 4.88% Notes due March 15, 2044 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 4.88% |
Total debt | $ 255 | 255
Loans payable | 5.88 Term Loan B Due June 9, 2032 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 5.88% |
Loans payable | 1.63% Euro Notes due October 30, 2026 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 1.63% |
Total debt | $ 571 | 578
Loans payable | 3.13% Sterling Notes due February 17, 2029 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 3.13% |
Total debt | $ 597 | 595
Line of Credit | 4.94 Term Loan A-2 Due April 3, 2028 | Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 4.94% |
Total debt | $ 250 | 0
Line of Credit | 4.94 Term Loan A-1 Due April 1, 2031 | Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument (as a percent) | 4.94% |
Total debt | $ 750 | 0
Line of Credit | 5.88 Term Loan B Due June 9, 2032 | Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
Total debt | 2,239 | 0
Lease and other obligations |  |
Debt Instrument [Line Items] |  |
Total debt | $ 164 | $ 195

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